English

Hereditarily Non Uniformly Perfect Sets

Complex Variables 2017-01-24 v2 Dynamical Systems Geometric Topology Probability

Abstract

We introduce the concept of hereditarily non uniformly perfect sets, compact sets for which no compact subset is uniformly perfect, and compare them with the following: Hausdorff dimension zero sets, logarithmic capacity zero sets, Lebesgue 2-dimensional measure zero sets, and porous sets. In particular, we give an example of a compact set in the plane of Hausdorff dimension 2 (and positive logarithmic capacity) which is hereditarily non uniformly perfect.

Keywords

Cite

@article{arxiv.1609.07235,
  title  = {Hereditarily Non Uniformly Perfect Sets},
  author = {Rich Stankewitz and Toshiyuki Sugawa and Hiroki Sumi},
  journal= {arXiv preprint arXiv:1609.07235},
  year   = {2017}
}

Comments

14 pages. See also http://rstankewitz.iweb.bsu.edu/, http://sugawa.cajpn.org/index_E.html, http://www.math.sci.osaka-u.ac.jp/~sumi/

R2 v1 2026-06-22T15:58:49.050Z